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Finding the Fourth Proportional to 666,780.38, 920,121.62 and 364,916.06

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Solution

The fourth proportional to 666,780.38, 920,121.62 and 364,916.06 is: 503,564.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,780.38 : 920,121.62 = 364,916.06 : x
  2. Step 2: Convert to fraction form
    666,780.38/920,121.62 = 364,916.06/x
  3. Step 3: Cross multiply
    666,780.38x = 920,121.62 × 364,916.06
  4. Step 4: Simplify right side
    666,780.38x = 335,767,156,291.22
  5. Step 5: Solve for x
    x = 335,767,156,291.22/666,780.38
  6. Step 6: Final answer
    x = 503,564.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.